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spf13--viper/viper_test.go
Adam Sherwood 1a0c4a370c Feature/write config (#287) 
* Added method to write into TOML file.

* Added functionality to export configuration based on config type. The feature supports JSON and TOML.

* Added method to write into YAML file.

* Fixed the issue of incorrect defer and error checking order. The error checking must be first otherwise it will cause panic.

* Add WriteConfig methods

* Add support for toml

* Add shared write function and safe methods

* Fix incorrectly modified imports

* Remove extra comments

* Fix spelling

* Make marshal spelling consistent throughout

* Add support for remaining configuration types

This commit moves a significant portion of the code back to viper.go to
facilitate having access to the object when reading the files. The purpose is to
add properties to the viper object at read time, so that we can add the comments
back to the file when writing.

* Add tests for each written file type

* Modify test for updated HCL specification

* Modify to only support HCL write in Go 1.7

* Revert "Modify to only support HCL write in Go 1.7"

This reverts commit 12b34bc4eb92cbf8ebfd56b79519f448607e3e51.

* Need to truncate the file before writing

* Write all settings including overrides

* Use filename variable

* Lint remote.go

* Fix toml return count error
2017-12-06 23:26:31 -05:00

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// Copyright © 2014 Steve Francia <spf@spf13.com>.
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
package viper
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"os"
"path"
"reflect"
"sort"
"strings"
"testing"
"time"
"github.com/spf13/afero"
"github.com/spf13/cast"
"github.com/spf13/pflag"
"github.com/stretchr/testify/assert"
)
var yamlExample = []byte(`Hacker: true
name: steve
hobbies:
- skateboarding
- snowboarding
- go
clothing:
jacket: leather
trousers: denim
pants:
size: large
age: 35
eyes : brown
beard: true
`)
var yamlExampleWithExtras = []byte(`Existing: true
Bogus: true
`)
type testUnmarshalExtra struct {
Existing bool
}
var tomlExample = []byte(`
title = "TOML Example"
[owner]
organization = "MongoDB"
Bio = "MongoDB Chief Developer Advocate & Hacker at Large"
dob = 1979-05-27T07:32:00Z # First class dates? Why not?`)
var jsonExample = []byte(`{
"id": "0001",
"type": "donut",
"name": "Cake",
"ppu": 0.55,
"batters": {
"batter": [
{ "type": "Regular" },
{ "type": "Chocolate" },
{ "type": "Blueberry" },
{ "type": "Devil's Food" }
]
}
}`)
var hclExample = []byte(`
id = "0001"
type = "donut"
name = "Cake"
ppu = 0.55
foos {
foo {
key = 1
}
foo {
key = 2
}
foo {
key = 3
}
foo {
key = 4
}
}`)
var propertiesExample = []byte(`
p_id: 0001
p_type: donut
p_name: Cake
p_ppu: 0.55
p_batters.batter.type: Regular
`)
var remoteExample = []byte(`{
"id":"0002",
"type":"cronut",
"newkey":"remote"
}`)
func initConfigs() {
Reset()
var r io.Reader
SetConfigType("yaml")
r = bytes.NewReader(yamlExample)
unmarshalReader(r, v.config)
SetConfigType("json")
r = bytes.NewReader(jsonExample)
unmarshalReader(r, v.config)
SetConfigType("hcl")
r = bytes.NewReader(hclExample)
unmarshalReader(r, v.config)
SetConfigType("properties")
r = bytes.NewReader(propertiesExample)
unmarshalReader(r, v.config)
SetConfigType("toml")
r = bytes.NewReader(tomlExample)
unmarshalReader(r, v.config)
SetConfigType("json")
remote := bytes.NewReader(remoteExample)
unmarshalReader(remote, v.kvstore)
}
func initConfig(typ, config string) {
Reset()
SetConfigType(typ)
r := strings.NewReader(config)
if err := unmarshalReader(r, v.config); err != nil {
panic(err)
}
}
func initYAML() {
initConfig("yaml", string(yamlExample))
}
func initJSON() {
Reset()
SetConfigType("json")
r := bytes.NewReader(jsonExample)
unmarshalReader(r, v.config)
}
func initProperties() {
Reset()
SetConfigType("properties")
r := bytes.NewReader(propertiesExample)
unmarshalReader(r, v.config)
}
func initTOML() {
Reset()
SetConfigType("toml")
r := bytes.NewReader(tomlExample)
unmarshalReader(r, v.config)
}
func initHcl() {
Reset()
SetConfigType("hcl")
r := bytes.NewReader(hclExample)
unmarshalReader(r, v.config)
}
// make directories for testing
func initDirs(t *testing.T) (string, string, func()) {
var (
testDirs = []string{`a a`, `b`, `c\c`, `D_`}
config = `improbable`
)
root, err := ioutil.TempDir("", "")
cleanup := true
defer func() {
if cleanup {
os.Chdir("..")
os.RemoveAll(root)
}
}()
assert.Nil(t, err)
err = os.Chdir(root)
assert.Nil(t, err)
for _, dir := range testDirs {
err = os.Mkdir(dir, 0750)
assert.Nil(t, err)
err = ioutil.WriteFile(
path.Join(dir, config+".toml"),
[]byte("key = \"value is "+dir+"\"\n"),
0640)
assert.Nil(t, err)
}
cleanup = false
return root, config, func() {
os.Chdir("..")
os.RemoveAll(root)
}
}
//stubs for PFlag Values
type stringValue string
func newStringValue(val string, p *string) *stringValue {
*p = val
return (*stringValue)(p)
}
func (s *stringValue) Set(val string) error {
*s = stringValue(val)
return nil
}
func (s *stringValue) Type() string {
return "string"
}
func (s *stringValue) String() string {
return fmt.Sprintf("%s", *s)
}
func TestBasics(t *testing.T) {
SetConfigFile("/tmp/config.yaml")
filename, err := v.getConfigFile()
assert.Equal(t, "/tmp/config.yaml", filename)
assert.NoError(t, err)
}
func TestDefault(t *testing.T) {
SetDefault("age", 45)
assert.Equal(t, 45, Get("age"))
SetDefault("clothing.jacket", "slacks")
assert.Equal(t, "slacks", Get("clothing.jacket"))
SetConfigType("yaml")
err := ReadConfig(bytes.NewBuffer(yamlExample))
assert.NoError(t, err)
assert.Equal(t, "leather", Get("clothing.jacket"))
}
func TestUnmarshaling(t *testing.T) {
SetConfigType("yaml")
r := bytes.NewReader(yamlExample)
unmarshalReader(r, v.config)
assert.True(t, InConfig("name"))
assert.False(t, InConfig("state"))
assert.Equal(t, "steve", Get("name"))
assert.Equal(t, []interface{}{"skateboarding", "snowboarding", "go"}, Get("hobbies"))
assert.Equal(t, map[string]interface{}{"jacket": "leather", "trousers": "denim", "pants": map[string]interface{}{"size": "large"}}, Get("clothing"))
assert.Equal(t, 35, Get("age"))
}
func TestUnmarshalExact(t *testing.T) {
vip := New()
target := &testUnmarshalExtra{}
vip.SetConfigType("yaml")
r := bytes.NewReader(yamlExampleWithExtras)
vip.ReadConfig(r)
err := vip.UnmarshalExact(target)
if err == nil {
t.Fatal("UnmarshalExact should error when populating a struct from a conf that contains unused fields")
}
}
func TestOverrides(t *testing.T) {
Set("age", 40)
assert.Equal(t, 40, Get("age"))
}
func TestDefaultPost(t *testing.T) {
assert.NotEqual(t, "NYC", Get("state"))
SetDefault("state", "NYC")
assert.Equal(t, "NYC", Get("state"))
}
func TestAliases(t *testing.T) {
RegisterAlias("years", "age")
assert.Equal(t, 40, Get("years"))
Set("years", 45)
assert.Equal(t, 45, Get("age"))
}
func TestAliasInConfigFile(t *testing.T) {
// the config file specifies "beard". If we make this an alias for
// "hasbeard", we still want the old config file to work with beard.
RegisterAlias("beard", "hasbeard")
assert.Equal(t, true, Get("hasbeard"))
Set("hasbeard", false)
assert.Equal(t, false, Get("beard"))
}
func TestYML(t *testing.T) {
initYAML()
assert.Equal(t, "steve", Get("name"))
}
func TestJSON(t *testing.T) {
initJSON()
assert.Equal(t, "0001", Get("id"))
}
func TestProperties(t *testing.T) {
initProperties()
assert.Equal(t, "0001", Get("p_id"))
}
func TestTOML(t *testing.T) {
initTOML()
assert.Equal(t, "TOML Example", Get("title"))
}
func TestHCL(t *testing.T) {
initHcl()
assert.Equal(t, "0001", Get("id"))
assert.Equal(t, 0.55, Get("ppu"))
assert.Equal(t, "donut", Get("type"))
assert.Equal(t, "Cake", Get("name"))
Set("id", "0002")
assert.Equal(t, "0002", Get("id"))
assert.NotEqual(t, "cronut", Get("type"))
}
func TestRemotePrecedence(t *testing.T) {
initJSON()
remote := bytes.NewReader(remoteExample)
assert.Equal(t, "0001", Get("id"))
unmarshalReader(remote, v.kvstore)
assert.Equal(t, "0001", Get("id"))
assert.NotEqual(t, "cronut", Get("type"))
assert.Equal(t, "remote", Get("newkey"))
Set("newkey", "newvalue")
assert.NotEqual(t, "remote", Get("newkey"))
assert.Equal(t, "newvalue", Get("newkey"))
Set("newkey", "remote")
}
func TestEnv(t *testing.T) {
initJSON()
BindEnv("id")
BindEnv("f", "FOOD")
os.Setenv("ID", "13")
os.Setenv("FOOD", "apple")
os.Setenv("NAME", "crunk")
assert.Equal(t, "13", Get("id"))
assert.Equal(t, "apple", Get("f"))
assert.Equal(t, "Cake", Get("name"))
AutomaticEnv()
assert.Equal(t, "crunk", Get("name"))
}
func TestEnvPrefix(t *testing.T) {
initJSON()
SetEnvPrefix("foo") // will be uppercased automatically
BindEnv("id")
BindEnv("f", "FOOD") // not using prefix
os.Setenv("FOO_ID", "13")
os.Setenv("FOOD", "apple")
os.Setenv("FOO_NAME", "crunk")
assert.Equal(t, "13", Get("id"))
assert.Equal(t, "apple", Get("f"))
assert.Equal(t, "Cake", Get("name"))
AutomaticEnv()
assert.Equal(t, "crunk", Get("name"))
}
func TestAutoEnv(t *testing.T) {
Reset()
AutomaticEnv()
os.Setenv("FOO_BAR", "13")
assert.Equal(t, "13", Get("foo_bar"))
}
func TestAutoEnvWithPrefix(t *testing.T) {
Reset()
AutomaticEnv()
SetEnvPrefix("Baz")
os.Setenv("BAZ_BAR", "13")
assert.Equal(t, "13", Get("bar"))
}
func TestSetEnvKeyReplacer(t *testing.T) {
Reset()
AutomaticEnv()
os.Setenv("REFRESH_INTERVAL", "30s")
replacer := strings.NewReplacer("-", "_")
SetEnvKeyReplacer(replacer)
assert.Equal(t, "30s", Get("refresh-interval"))
}
func TestAllKeys(t *testing.T) {
initConfigs()
ks := sort.StringSlice{"title", "newkey", "owner.organization", "owner.dob", "owner.bio", "name", "beard", "ppu", "batters.batter", "hobbies", "clothing.jacket", "clothing.trousers", "clothing.pants.size", "age", "hacker", "id", "type", "eyes", "p_id", "p_ppu", "p_batters.batter.type", "p_type", "p_name", "foos"}
dob, _ := time.Parse(time.RFC3339, "1979-05-27T07:32:00Z")
all := map[string]interface{}{"owner": map[string]interface{}{"organization": "MongoDB", "bio": "MongoDB Chief Developer Advocate & Hacker at Large", "dob": dob}, "title": "TOML Example", "ppu": 0.55, "eyes": "brown", "clothing": map[string]interface{}{"trousers": "denim", "jacket": "leather", "pants": map[string]interface{}{"size": "large"}}, "id": "0001", "batters": map[string]interface{}{"batter": []interface{}{map[string]interface{}{"type": "Regular"}, map[string]interface{}{"type": "Chocolate"}, map[string]interface{}{"type": "Blueberry"}, map[string]interface{}{"type": "Devil's Food"}}}, "hacker": true, "beard": true, "hobbies": []interface{}{"skateboarding", "snowboarding", "go"}, "age": 35, "type": "donut", "newkey": "remote", "name": "Cake", "p_id": "0001", "p_ppu": "0.55", "p_name": "Cake", "p_batters": map[string]interface{}{"batter": map[string]interface{}{"type": "Regular"}}, "p_type": "donut", "foos": []map[string]interface{}{map[string]interface{}{"foo": []map[string]interface{}{map[string]interface{}{"key": 1}, map[string]interface{}{"key": 2}, map[string]interface{}{"key": 3}, map[string]interface{}{"key": 4}}}}}
var allkeys sort.StringSlice
allkeys = AllKeys()
allkeys.Sort()
ks.Sort()
assert.Equal(t, ks, allkeys)
assert.Equal(t, all, AllSettings())
}
func TestAllKeysWithEnv(t *testing.T) {
v := New()
// bind and define environment variables (including a nested one)
v.BindEnv("id")
v.BindEnv("foo.bar")
v.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
os.Setenv("ID", "13")
os.Setenv("FOO_BAR", "baz")
expectedKeys := sort.StringSlice{"id", "foo.bar"}
expectedKeys.Sort()
keys := sort.StringSlice(v.AllKeys())
keys.Sort()
assert.Equal(t, expectedKeys, keys)
}
func TestAliasesOfAliases(t *testing.T) {
Set("Title", "Checking Case")
RegisterAlias("Foo", "Bar")
RegisterAlias("Bar", "Title")
assert.Equal(t, "Checking Case", Get("FOO"))
}
func TestRecursiveAliases(t *testing.T) {
RegisterAlias("Baz", "Roo")
RegisterAlias("Roo", "baz")
}
func TestUnmarshal(t *testing.T) {
SetDefault("port", 1313)
Set("name", "Steve")
Set("duration", "1s1ms")
type config struct {
Port int
Name string
Duration time.Duration
}
var C config
err := Unmarshal(&C)
if err != nil {
t.Fatalf("unable to decode into struct, %v", err)
}
assert.Equal(t, &config{Name: "Steve", Port: 1313, Duration: time.Second + time.Millisecond}, &C)
Set("port", 1234)
err = Unmarshal(&C)
if err != nil {
t.Fatalf("unable to decode into struct, %v", err)
}
assert.Equal(t, &config{Name: "Steve", Port: 1234, Duration: time.Second + time.Millisecond}, &C)
}
func TestBindPFlags(t *testing.T) {
v := New() // create independent Viper object
flagSet := pflag.NewFlagSet("test", pflag.ContinueOnError)
var testValues = map[string]*string{
"host": nil,
"port": nil,
"endpoint": nil,
}
var mutatedTestValues = map[string]string{
"host": "localhost",
"port": "6060",
"endpoint": "/public",
}
for name := range testValues {
testValues[name] = flagSet.String(name, "", "test")
}
err := v.BindPFlags(flagSet)
if err != nil {
t.Fatalf("error binding flag set, %v", err)
}
flagSet.VisitAll(func(flag *pflag.Flag) {
flag.Value.Set(mutatedTestValues[flag.Name])
flag.Changed = true
})
for name, expected := range mutatedTestValues {
assert.Equal(t, expected, v.Get(name))
}
}
func TestBindPFlagsStringSlice(t *testing.T) {
for _, testValue := range []struct {
Expected []string
Value string
}{
{[]string{}, ""},
{[]string{"jeden"}, "jeden"},
{[]string{"dwa", "trzy"}, "dwa,trzy"},
{[]string{"cztery", "piec , szesc"}, "cztery,\"piec , szesc\""}} {
for _, changed := range []bool{true, false} {
v := New() // create independent Viper object
flagSet := pflag.NewFlagSet("test", pflag.ContinueOnError)
flagSet.StringSlice("stringslice", testValue.Expected, "test")
flagSet.Visit(func(f *pflag.Flag) {
if len(testValue.Value) > 0 {
f.Value.Set(testValue.Value)
f.Changed = changed
}
})
err := v.BindPFlags(flagSet)
if err != nil {
t.Fatalf("error binding flag set, %v", err)
}
type TestStr struct {
StringSlice []string
}
val := &TestStr{}
if err := v.Unmarshal(val); err != nil {
t.Fatalf("%+#v cannot unmarshal: %s", testValue.Value, err)
}
assert.Equal(t, testValue.Expected, val.StringSlice)
}
}
}
func TestBindPFlag(t *testing.T) {
var testString = "testing"
var testValue = newStringValue(testString, &testString)
flag := &pflag.Flag{
Name: "testflag",
Value: testValue,
Changed: false,
}
BindPFlag("testvalue", flag)
assert.Equal(t, testString, Get("testvalue"))
flag.Value.Set("testing_mutate")
flag.Changed = true //hack for pflag usage
assert.Equal(t, "testing_mutate", Get("testvalue"))
}
func TestBoundCaseSensitivity(t *testing.T) {
assert.Equal(t, "brown", Get("eyes"))
BindEnv("eYEs", "TURTLE_EYES")
os.Setenv("TURTLE_EYES", "blue")
assert.Equal(t, "blue", Get("eyes"))
var testString = "green"
var testValue = newStringValue(testString, &testString)
flag := &pflag.Flag{
Name: "eyeballs",
Value: testValue,
Changed: true,
}
BindPFlag("eYEs", flag)
assert.Equal(t, "green", Get("eyes"))
}
func TestSizeInBytes(t *testing.T) {
input := map[string]uint{
"": 0,
"b": 0,
"12 bytes": 0,
"200000000000gb": 0,
"12 b": 12,
"43 MB": 43 * (1 << 20),
"10mb": 10 * (1 << 20),
"1gb": 1 << 30,
}
for str, expected := range input {
assert.Equal(t, expected, parseSizeInBytes(str), str)
}
}
func TestFindsNestedKeys(t *testing.T) {
initConfigs()
dob, _ := time.Parse(time.RFC3339, "1979-05-27T07:32:00Z")
Set("super", map[string]interface{}{
"deep": map[string]interface{}{
"nested": "value",
},
})
expected := map[string]interface{}{
"super": map[string]interface{}{
"deep": map[string]interface{}{
"nested": "value",
},
},
"super.deep": map[string]interface{}{
"nested": "value",
},
"super.deep.nested": "value",
"owner.organization": "MongoDB",
"batters.batter": []interface{}{
map[string]interface{}{
"type": "Regular",
},
map[string]interface{}{
"type": "Chocolate",
},
map[string]interface{}{
"type": "Blueberry",
},
map[string]interface{}{
"type": "Devil's Food",
},
},
"hobbies": []interface{}{
"skateboarding", "snowboarding", "go",
},
"title": "TOML Example",
"newkey": "remote",
"batters": map[string]interface{}{
"batter": []interface{}{
map[string]interface{}{
"type": "Regular",
},
map[string]interface{}{
"type": "Chocolate",
}, map[string]interface{}{
"type": "Blueberry",
}, map[string]interface{}{
"type": "Devil's Food",
},
},
},
"eyes": "brown",
"age": 35,
"owner": map[string]interface{}{
"organization": "MongoDB",
"bio": "MongoDB Chief Developer Advocate & Hacker at Large",
"dob": dob,
},
"owner.bio": "MongoDB Chief Developer Advocate & Hacker at Large",
"type": "donut",
"id": "0001",
"name": "Cake",
"hacker": true,
"ppu": 0.55,
"clothing": map[string]interface{}{
"jacket": "leather",
"trousers": "denim",
"pants": map[string]interface{}{
"size": "large",
},
},
"clothing.jacket": "leather",
"clothing.pants.size": "large",
"clothing.trousers": "denim",
"owner.dob": dob,
"beard": true,
"foos": []map[string]interface{}{
map[string]interface{}{
"foo": []map[string]interface{}{
map[string]interface{}{
"key": 1,
},
map[string]interface{}{
"key": 2,
},
map[string]interface{}{
"key": 3,
},
map[string]interface{}{
"key": 4,
},
},
},
},
}
for key, expectedValue := range expected {
assert.Equal(t, expectedValue, v.Get(key))
}
}
func TestReadBufConfig(t *testing.T) {
v := New()
v.SetConfigType("yaml")
v.ReadConfig(bytes.NewBuffer(yamlExample))
t.Log(v.AllKeys())
assert.True(t, v.InConfig("name"))
assert.False(t, v.InConfig("state"))
assert.Equal(t, "steve", v.Get("name"))
assert.Equal(t, []interface{}{"skateboarding", "snowboarding", "go"}, v.Get("hobbies"))
assert.Equal(t, map[string]interface{}{"jacket": "leather", "trousers": "denim", "pants": map[string]interface{}{"size": "large"}}, v.Get("clothing"))
assert.Equal(t, 35, v.Get("age"))
}
func TestIsSet(t *testing.T) {
v := New()
v.SetConfigType("yaml")
v.ReadConfig(bytes.NewBuffer(yamlExample))
assert.True(t, v.IsSet("clothing.jacket"))
assert.False(t, v.IsSet("clothing.jackets"))
assert.False(t, v.IsSet("helloworld"))
v.Set("helloworld", "fubar")
assert.True(t, v.IsSet("helloworld"))
}
func TestDirsSearch(t *testing.T) {
root, config, cleanup := initDirs(t)
defer cleanup()
v := New()
v.SetConfigName(config)
v.SetDefault(`key`, `default`)
entries, err := ioutil.ReadDir(root)
for _, e := range entries {
if e.IsDir() {
v.AddConfigPath(e.Name())
}
}
err = v.ReadInConfig()
assert.Nil(t, err)
assert.Equal(t, `value is `+path.Base(v.configPaths[0]), v.GetString(`key`))
}
func TestWrongDirsSearchNotFound(t *testing.T) {
_, config, cleanup := initDirs(t)
defer cleanup()
v := New()
v.SetConfigName(config)
v.SetDefault(`key`, `default`)
v.AddConfigPath(`whattayoutalkingbout`)
v.AddConfigPath(`thispathaintthere`)
err := v.ReadInConfig()
assert.Equal(t, reflect.TypeOf(ConfigFileNotFoundError{"", ""}), reflect.TypeOf(err))
// Even though config did not load and the error might have
// been ignored by the client, the default still loads
assert.Equal(t, `default`, v.GetString(`key`))
}
func TestWrongDirsSearchNotFoundForMerge(t *testing.T) {
_, config, cleanup := initDirs(t)
defer cleanup()
v := New()
v.SetConfigName(config)
v.SetDefault(`key`, `default`)
v.AddConfigPath(`whattayoutalkingbout`)
v.AddConfigPath(`thispathaintthere`)
err := v.MergeInConfig()
assert.Equal(t, reflect.TypeOf(ConfigFileNotFoundError{"", ""}), reflect.TypeOf(err))
// Even though config did not load and the error might have
// been ignored by the client, the default still loads
assert.Equal(t, `default`, v.GetString(`key`))
}
func TestSub(t *testing.T) {
v := New()
v.SetConfigType("yaml")
v.ReadConfig(bytes.NewBuffer(yamlExample))
subv := v.Sub("clothing")
assert.Equal(t, v.Get("clothing.pants.size"), subv.Get("pants.size"))
subv = v.Sub("clothing.pants")
assert.Equal(t, v.Get("clothing.pants.size"), subv.Get("size"))
subv = v.Sub("clothing.pants.size")
assert.Equal(t, (*Viper)(nil), subv)
subv = v.Sub("missing.key")
assert.Equal(t, (*Viper)(nil), subv)
}
var hclWriteExpected = []byte(`"foos" = {
"foo" = {
"key" = 1
}
"foo" = {
"key" = 2
}
"foo" = {
"key" = 3
}
"foo" = {
"key" = 4
}
}
"id" = "0001"
"name" = "Cake"
"ppu" = 0.55
"type" = "donut"`)
func TestWriteConfigHCL(t *testing.T) {
v := New()
fs := afero.NewMemMapFs()
v.SetFs(fs)
v.SetConfigName("c")
v.SetConfigType("hcl")
err := v.ReadConfig(bytes.NewBuffer(hclExample))
if err != nil {
t.Fatal(err)
}
if err := v.WriteConfigAs("c.hcl"); err != nil {
t.Fatal(err)
}
read, err := afero.ReadFile(fs, "c.hcl")
if err != nil {
t.Fatal(err)
}
assert.Equal(t, hclWriteExpected, read)
}
var jsonWriteExpected = []byte(`{
"batters": {
"batter": [
{
"type": "Regular"
},
{
"type": "Chocolate"
},
{
"type": "Blueberry"
},
{
"type": "Devil's Food"
}
]
},
"id": "0001",
"name": "Cake",
"ppu": 0.55,
"type": "donut"
}`)
func TestWriteConfigJson(t *testing.T) {
v := New()
fs := afero.NewMemMapFs()
v.SetFs(fs)
v.SetConfigName("c")
v.SetConfigType("json")
err := v.ReadConfig(bytes.NewBuffer(jsonExample))
if err != nil {
t.Fatal(err)
}
if err := v.WriteConfigAs("c.json"); err != nil {
t.Fatal(err)
}
read, err := afero.ReadFile(fs, "c.json")
if err != nil {
t.Fatal(err)
}
assert.Equal(t, jsonWriteExpected, read)
}
var propertiesWriteExpected = []byte(`p_id = 0001
p_type = donut
p_name = Cake
p_ppu = 0.55
p_batters.batter.type = Regular
`)
func TestWriteConfigProperties(t *testing.T) {
v := New()
fs := afero.NewMemMapFs()
v.SetFs(fs)
v.SetConfigName("c")
v.SetConfigType("properties")
err := v.ReadConfig(bytes.NewBuffer(propertiesExample))
if err != nil {
t.Fatal(err)
}
if err := v.WriteConfigAs("c.properties"); err != nil {
t.Fatal(err)
}
read, err := afero.ReadFile(fs, "c.properties")
if err != nil {
t.Fatal(err)
}
assert.Equal(t, propertiesWriteExpected, read)
}
func TestWriteConfigTOML(t *testing.T) {
fs := afero.NewMemMapFs()
v := New()
v.SetFs(fs)
v.SetConfigName("c")
v.SetConfigType("toml")
err := v.ReadConfig(bytes.NewBuffer(tomlExample))
if err != nil {
t.Fatal(err)
}
if err := v.WriteConfigAs("c.toml"); err != nil {
t.Fatal(err)
}
// The TOML String method does not order the contents.
// Therefore, we must read the generated file and compare the data.
v2 := New()
v2.SetFs(fs)
v2.SetConfigName("c")
v2.SetConfigType("toml")
v2.SetConfigFile("c.toml")
err = v2.ReadInConfig()
if err != nil {
t.Fatal(err)
}
assert.Equal(t, v.GetString("title"), v2.GetString("title"))
assert.Equal(t, v.GetString("owner.bio"), v2.GetString("owner.bio"))
assert.Equal(t, v.GetString("owner.dob"), v2.GetString("owner.dob"))
assert.Equal(t, v.GetString("owner.organization"), v2.GetString("owner.organization"))
}
var yamlWriteExpected = []byte(`age: 35
beard: true
clothing:
jacket: leather
pants:
size: large
trousers: denim
eyes: brown
hacker: true
hobbies:
- skateboarding
- snowboarding
- go
name: steve
`)
func TestWriteConfigYAML(t *testing.T) {
v := New()
fs := afero.NewMemMapFs()
v.SetFs(fs)
v.SetConfigName("c")
v.SetConfigType("yaml")
err := v.ReadConfig(bytes.NewBuffer(yamlExample))
if err != nil {
t.Fatal(err)
}
if err := v.WriteConfigAs("c.yaml"); err != nil {
t.Fatal(err)
}
read, err := afero.ReadFile(fs, "c.yaml")
if err != nil {
t.Fatal(err)
}
assert.Equal(t, yamlWriteExpected, read)
}
var yamlMergeExampleTgt = []byte(`
hello:
pop: 37890
lagrenum: 765432101234567
world:
- us
- uk
- fr
- de
`)
var yamlMergeExampleSrc = []byte(`
hello:
pop: 45000
lagrenum: 7654321001234567
universe:
- mw
- ad
fu: bar
`)
func TestMergeConfig(t *testing.T) {
v := New()
v.SetConfigType("yml")
if err := v.ReadConfig(bytes.NewBuffer(yamlMergeExampleTgt)); err != nil {
t.Fatal(err)
}
if pop := v.GetInt("hello.pop"); pop != 37890 {
t.Fatalf("pop != 37890, = %d", pop)
}
if pop := v.GetInt("hello.lagrenum"); pop != 765432101234567 {
t.Fatalf("lagrenum != 765432101234567, = %d", pop)
}
if pop := v.GetInt64("hello.lagrenum"); pop != int64(765432101234567) {
t.Fatalf("int64 lagrenum != 765432101234567, = %d", pop)
}
if world := v.GetStringSlice("hello.world"); len(world) != 4 {
t.Fatalf("len(world) != 4, = %d", len(world))
}
if fu := v.GetString("fu"); fu != "" {
t.Fatalf("fu != \"\", = %s", fu)
}
if err := v.MergeConfig(bytes.NewBuffer(yamlMergeExampleSrc)); err != nil {
t.Fatal(err)
}
if pop := v.GetInt("hello.pop"); pop != 45000 {
t.Fatalf("pop != 45000, = %d", pop)
}
if pop := v.GetInt("hello.lagrenum"); pop != 7654321001234567 {
t.Fatalf("lagrenum != 7654321001234567, = %d", pop)
}
if pop := v.GetInt64("hello.lagrenum"); pop != int64(7654321001234567) {
t.Fatalf("int64 lagrenum != 7654321001234567, = %d", pop)
}
if world := v.GetStringSlice("hello.world"); len(world) != 4 {
t.Fatalf("len(world) != 4, = %d", len(world))
}
if universe := v.GetStringSlice("hello.universe"); len(universe) != 2 {
t.Fatalf("len(universe) != 2, = %d", len(universe))
}
if fu := v.GetString("fu"); fu != "bar" {
t.Fatalf("fu != \"bar\", = %s", fu)
}
}
func TestMergeConfigNoMerge(t *testing.T) {
v := New()
v.SetConfigType("yml")
if err := v.ReadConfig(bytes.NewBuffer(yamlMergeExampleTgt)); err != nil {
t.Fatal(err)
}
if pop := v.GetInt("hello.pop"); pop != 37890 {
t.Fatalf("pop != 37890, = %d", pop)
}
if world := v.GetStringSlice("hello.world"); len(world) != 4 {
t.Fatalf("len(world) != 4, = %d", len(world))
}
if fu := v.GetString("fu"); fu != "" {
t.Fatalf("fu != \"\", = %s", fu)
}
if err := v.ReadConfig(bytes.NewBuffer(yamlMergeExampleSrc)); err != nil {
t.Fatal(err)
}
if pop := v.GetInt("hello.pop"); pop != 45000 {
t.Fatalf("pop != 45000, = %d", pop)
}
if world := v.GetStringSlice("hello.world"); len(world) != 0 {
t.Fatalf("len(world) != 0, = %d", len(world))
}
if universe := v.GetStringSlice("hello.universe"); len(universe) != 2 {
t.Fatalf("len(universe) != 2, = %d", len(universe))
}
if fu := v.GetString("fu"); fu != "bar" {
t.Fatalf("fu != \"bar\", = %s", fu)
}
}
func TestUnmarshalingWithAliases(t *testing.T) {
v := New()
v.SetDefault("ID", 1)
v.Set("name", "Steve")
v.Set("lastname", "Owen")
v.RegisterAlias("UserID", "ID")
v.RegisterAlias("Firstname", "name")
v.RegisterAlias("Surname", "lastname")
type config struct {
ID int
FirstName string
Surname string
}
var C config
err := v.Unmarshal(&C)
if err != nil {
t.Fatalf("unable to decode into struct, %v", err)
}
assert.Equal(t, &config{ID: 1, FirstName: "Steve", Surname: "Owen"}, &C)
}
func TestSetConfigNameClearsFileCache(t *testing.T) {
SetConfigFile("/tmp/config.yaml")
SetConfigName("default")
f, err := v.getConfigFile()
if err == nil {
t.Fatalf("config file cache should have been cleared")
}
assert.Empty(t, f)
}
func TestShadowedNestedValue(t *testing.T) {
config := `name: steve
clothing:
jacket: leather
trousers: denim
pants:
size: large
`
initConfig("yaml", config)
assert.Equal(t, "steve", GetString("name"))
polyester := "polyester"
SetDefault("clothing.shirt", polyester)
SetDefault("clothing.jacket.price", 100)
assert.Equal(t, "leather", GetString("clothing.jacket"))
assert.Nil(t, Get("clothing.jacket.price"))
assert.Equal(t, polyester, GetString("clothing.shirt"))
clothingSettings := AllSettings()["clothing"].(map[string]interface{})
assert.Equal(t, "leather", clothingSettings["jacket"])
assert.Equal(t, polyester, clothingSettings["shirt"])
}
func TestDotParameter(t *testing.T) {
initJSON()
// shoud take precedence over batters defined in jsonExample
r := bytes.NewReader([]byte(`{ "batters.batter": [ { "type": "Small" } ] }`))
unmarshalReader(r, v.config)
actual := Get("batters.batter")
expected := []interface{}{map[string]interface{}{"type": "Small"}}
assert.Equal(t, expected, actual)
}
func TestCaseInsensitive(t *testing.T) {
for _, config := range []struct {
typ string
content string
}{
{"yaml", `
aBcD: 1
eF:
gH: 2
iJk: 3
Lm:
nO: 4
P:
Q: 5
R: 6
`},
{"json", `{
"aBcD": 1,
"eF": {
"iJk": 3,
"Lm": {
"P": {
"Q": 5,
"R": 6
},
"nO": 4
},
"gH": 2
}
}`},
{"toml", `aBcD = 1
[eF]
gH = 2
iJk = 3
[eF.Lm]
nO = 4
[eF.Lm.P]
Q = 5
R = 6
`},
} {
doTestCaseInsensitive(t, config.typ, config.content)
}
}
func TestCaseInsensitiveSet(t *testing.T) {
Reset()
m1 := map[string]interface{}{
"Foo": 32,
"Bar": map[interface{}]interface {
}{
"ABc": "A",
"cDE": "B"},
}
m2 := map[string]interface{}{
"Foo": 52,
"Bar": map[interface{}]interface {
}{
"bCd": "A",
"eFG": "B"},
}
Set("Given1", m1)
Set("Number1", 42)
SetDefault("Given2", m2)
SetDefault("Number2", 52)
// Verify SetDefault
if v := Get("number2"); v != 52 {
t.Fatalf("Expected 52 got %q", v)
}
if v := Get("given2.foo"); v != 52 {
t.Fatalf("Expected 52 got %q", v)
}
if v := Get("given2.bar.bcd"); v != "A" {
t.Fatalf("Expected A got %q", v)
}
if _, ok := m2["Foo"]; !ok {
t.Fatal("Input map changed")
}
// Verify Set
if v := Get("number1"); v != 42 {
t.Fatalf("Expected 42 got %q", v)
}
if v := Get("given1.foo"); v != 32 {
t.Fatalf("Expected 32 got %q", v)
}
if v := Get("given1.bar.abc"); v != "A" {
t.Fatalf("Expected A got %q", v)
}
if _, ok := m1["Foo"]; !ok {
t.Fatal("Input map changed")
}
}
func TestParseNested(t *testing.T) {
type duration struct {
Delay time.Duration
}
type item struct {
Name string
Delay time.Duration
Nested duration
}
config := `[[parent]]
delay="100ms"
[parent.nested]
delay="200ms"
`
initConfig("toml", config)
var items []item
err := v.UnmarshalKey("parent", &items)
if err != nil {
t.Fatalf("unable to decode into struct, %v", err)
}
assert.Equal(t, 1, len(items))
assert.Equal(t, 100*time.Millisecond, items[0].Delay)
assert.Equal(t, 200*time.Millisecond, items[0].Nested.Delay)
}
func doTestCaseInsensitive(t *testing.T, typ, config string) {
initConfig(typ, config)
Set("RfD", true)
assert.Equal(t, true, Get("rfd"))
assert.Equal(t, true, Get("rFD"))
assert.Equal(t, 1, cast.ToInt(Get("abcd")))
assert.Equal(t, 1, cast.ToInt(Get("Abcd")))
assert.Equal(t, 2, cast.ToInt(Get("ef.gh")))
assert.Equal(t, 3, cast.ToInt(Get("ef.ijk")))
assert.Equal(t, 4, cast.ToInt(Get("ef.lm.no")))
assert.Equal(t, 5, cast.ToInt(Get("ef.lm.p.q")))
}
func BenchmarkGetBool(b *testing.B) {
key := "BenchmarkGetBool"
v = New()
v.Set(key, true)
for i := 0; i < b.N; i++ {
if !v.GetBool(key) {
b.Fatal("GetBool returned false")
}
}
}
func BenchmarkGet(b *testing.B) {
key := "BenchmarkGet"
v = New()
v.Set(key, true)
for i := 0; i < b.N; i++ {
if !v.Get(key).(bool) {
b.Fatal("Get returned false")
}
}
}
// This is the "perfect result" for the above.
func BenchmarkGetBoolFromMap(b *testing.B) {
m := make(map[string]bool)
key := "BenchmarkGetBool"
m[key] = true
for i := 0; i < b.N; i++ {
if !m[key] {
b.Fatal("Map value was false")
}
}
}
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